Heating-drum.



1 9i 11 zoom PATENTED APR. 21, 1908.

G. HALLBY.

HEATING DRUM. APPLICATION FILED APB-.17. 1901.

THE NORRIS PETERS co. WASHINGTON. o. c.

GEORGE HALLEY, OF NEVADA, IOWA.

HEATING-DRUM.

Application filed April 17, 1907.

Specification of Letters Patent.

Patented April 21, 1908.

Serial No. 368,685.

T 0 all whom it may concern:

Be it known that I, GEORGE HALLEY, a citizen of the United States,residing at Nevada, in the county of Story, State of Iowa, have inventedcertain new and useful Imrovements in Heating-Drums; and I do erebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to new and useful improvements in heating drumsfor stoves an more particularly to heating drums serving as a cookingattachment.

In connection with a device of the above type the invention has for itsobject to provi e a novel construction and arrangement of parts, wherebythe heat is uniformly distributed to the surface of the heatingattachment with the greatest degree of radiation possible.

The details of construction will appear in the course of the followingdescriptlon, in which reference is had to the accom anying drawingsformin a art of this speci cation, like characterso re erencedesignating simi lar parts throughout the several views, wherem:

Figure 1 is a central longitudinal section of a heating stoveconstructed in accordance with the present invention. Fi 2 is a centralhorizontal section on the ine 22 of Fig. 1, the tortuous pipe throughwhich the heated air passes being shown in elevation.

Referrin specifically to the accompanying drawings, t e numeral 1designates a heating stove or furnace of conventional form including theashpit 2, the grate 3, firebox 4, draftwall 5, and the discharge passage6, the latter communicating with a pipe section 7 lead ing fromtheifurnace. wlthin'ithezstove 1 is supported an oven 8 whichjlis closedby a door 9.

The cooking attachment which forms the subject matter of the resentinvention comprises a' casing 10 pre erably rectangular and ormed at itsends with thimblesjl11 and12, the thimble 11 being en aged with thepipe; section 7 and the thimble 12 being engaged with a pipe section 13leading to the chimney.

The casing 10 is constituted with baffle plates 14 depending from itstop wall and terminating short of its bottom wall and with baffle plates15 projecting from its bottom wall and terminating short of its topwall. The plates 15 are arranged alternately between the plates 14 andpartially overlap the same so that a tortuous passage for the travel ofthe heated products through the casing is afforded as indicated by thearrows.

The plates 14 and 15 conjointly support a pipe 16 having enlarged orflaring ends 17 which register with pipe sections 7 and 13. The pipe 16between its ends is formed with sinuous convolutions, and at the bendsbetween the adjacent pairs of convolutions passes through the plates 14and 15 in their alternate occurrence. It will thus be seen that theconvolutions extend in opposite directions alternately in the spacesbetween the adjacent pairs of said plates.

In use, in addition to the baking which may be done in the oven 8, thecasing 10 is utilized for any of the purposes of a cooking stove. Itwill be obvious that due to the re lation of the baffle plates, theproducts of combustion are directed constantly during the tortuoustravel thereof to the top plate 18 of said casing 10 and also by thetrend of the sinuous eonvolutions of the pipe 16 effects an increaseradiation of heat throughout the area of the interior portion of saidcasing 10 and in this manner increases the heating qualities of theattachment, and at the same time giving the requisite draft in saidpipe.

The attachment embodied in the present invention is applicable to anyconventional form of stove and is simple in construction, inexpensive tomanufacture, and practical in use.

From the foregoing description it will be seen that simple and efficientmeans are provided for accomplishing the objects of the invention, but,while the elements herein shown and described are well adapted to servethe functions set forth, it is obvious that various minor changes may bemade in the proportions, shape and arrangement of the several parts,without departing from the spirit and scope of the invention as definedin the appended claims.

What is claimed is:

An attachment for heating stoves, comprising a casing adapted forcommunication With a stove and its chimney, bafiie plates 5 projectingin parallel relation alternately from the top and bottom of said casingto form a continuous tortuous passage therein, and a sinuous convolutedconductor Within said casing and supported by said baffiel plates, saidconductor terminating at opposite l0 ends adjacent the communicationsWith the stove and its chimney.

In testimony whereof, I affix my signature, in presence of tWoWitnesses.

GEORGE HALLEY. l/Vitnesses:

JAY O. DUTToN, J. A. MILLs.

